618 Pomona College Journal of Entomology 



SOAP SPRAYS 



Whale Oil Soap 



Whale oil soap 1 pound. 



Water 6 gallons. 



EMULSIONS 



Kerosene Emulsion 

 stock solution 



Kerosene 2 gallons. 



Whale oil or laundry soap % pound. 



Water (mu.st be soft) 1 gallon. 



preparation 

 Dissolve the soap in hot or boiling water ; add the kerosene (be careful of 

 fire) ; agitate thoroughly with a hand pump until a rather thick, creamy liquid 

 results. (This thorough agitation, by pumping back into the same vessel, is 

 necessary to insure a proper emulsion, which will not damage the foliage.) For 

 use add one gallon of the above stock solution to every twelve gallons of water. 



Carbolic Acid Emulsion 



STOCK solution 



Whale oil soap 40 pounds. 



Crude carbolic acid 5 gallons. 



Water to mix 40 gallons. 



preparation 

 Dissolve the whale oil soap in the water, heating it to the boiling point (soap 

 must be thoroughly dissolved) ; add the crude carbolic acid and cook for twenty 

 minutes over a good fire (reserve five gallons of water to add in case the mixture 

 begins to boil over). For use add twenty gallons of water to every gallon of the 

 stock solution. This emulsion needs no agitation while being applied. 



RESIN SPRAY 

 Resin Wash 



Resin 10 pounds. 



Caustic soda (76 per cent) 3 pounds. 



Fish oil 11/2 pints. 



Water 50 gallons. 



Place resin, soda and fish oil in a kettle with water to cover them to a depth 

 of three or four inches. Boil and add water from time to time to make half or a 

 third of the final amount for a stock solution, and for use dilute this according 

 to the above formula. 



QUASSIA CHIPS AND WHALE OIL SOAP 



stock solution 



Quassia Chips 1 pound. 



Water 1 gallon. 



Wliale oil soap 1^ pound. 



preparation. 

 Boil the quassia chips in water for one-half hour; add the soap and stir until 

 all is dissolved in the boiling water. For use dilute with ten gallons of water. 



